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Ninebot Max Error Code 21: Difference between revisions
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==Cause== | ==Cause== | ||
Error 21 is thrown when the ESC is unable to receive any data from the BMS/Battery. | |||
This may be because the 4-pin BMS data line has come unplugged or is not firmly plugged into the ESC. | This may be because the 4-pin BMS data line has come unplugged, or is not firmly plugged into the ESC. | ||
It can also happen when the battery is fully dead or something has killed the BMS board inside. | It can also happen when the battery is fully dead or something has killed the BMS board inside. | ||
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==Fix== | ==Fix== | ||
The first thing to check is that the battery had not somehow become unplugged | The first thing to check is that the battery had not somehow become unplugged: | ||
*Remove the bottom panel and the control board so that you can access the wires more easily. | *Remove the bottom panel and the control board so that you can access the wires more easily. | ||